lines in rectangle
Still counting how into how many pieces one can cut a sheet of paper by straight cuts. Can one with 3 cuts gets 4 pieces? 5? 6? 7? 8? |
| 3 cuts, 6 pieces |
Euler characteristic, again
summing up these vertices, edges and pieces leads us again to Euler characteristics...
Is it still 1?
 |
| 12 Vertices + 6 pieces = 17 edges + 1 (this is Euler characteristic) |
It still is...
Gallery guards
How many of them do you need to keep an eye on all the walls of this crazy gallery?
SET
Catching those sets - about 1 in 4 correct!
experiment du jour: ice and the level of the water
when our little iceberg melts, will the water level go up?
No...
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